//隐藏显示
    public void fbClick(View view) {
        if (pb.getVisibility() == View.GONE) {
            pb.setVisibility(View.VISIBLE);
        } else {
            pb.setVisibility(View.GONE);
        }
    }

    
    //加载进度
    public void fbClick2(View view) {
        int progress = pb2.getProgress();
        progress+=10;
        pb2.setProgress(progress);
    }